Motherboard header connectors: Where do you get them?

I am wiring a bunch of jumpers and switches to the back panel of my ampie case and am trying to find where a good place is to buy a handful of the plastic connectors that attach to the motherboard header pins. I would also need the crimp/solder pins that are placed (housed) inside these connectors. I have found some 2-pin fan-type connectors but they are too big and only good for fan header-type connections.
This is what I have found:
and this is what I want:
or like the 2-pin connector in the center of this picture:
I have found pre-made, 2-wire connections like this but they are charging like $5 for it. I just want to make my own cables but am having a tough time finding a good source.

I use these connectors quite often, they're moderately cheap (about 50 cents per 2-pin connector, including housing and pins) - but you do (sort of) need the crimping tool, which is about $11. You can crimp with pliers if you want to save money, but I think it's worth getting the right tool if you're going to be doing very many.

I am wiring a bunch of jumpers and switches to the back panel of my ampie case and am trying to find where a good place is to buy a handful of the plastic connectors that attach to the motherboard header pins. I would also need the crimp/solder pins that are placed (housed) inside these connectors. I have found some 2-pin fan-type connectors but they are too big and only good for fan header-type connections.
This is what I have found:
and this is what I want:
or like the 2-pin connector in the center of this picture:
I have found pre-made, 2-wire connections like this but they are charging like $5 for it. I just want to make my own cables but am having a tough time finding a good source.

Thanks.

Look for a local electronics supplier or surplus place. I bought mine at Ax-Man in St.Paul MN for like .25 a peice. They were all 2 pin, with the pins already crimped in place so no need for the crimper.